I am new (on my trial run) to AE. I saw this really cool effect that imitates a slightly shakey footage that jumps around (barely) and does these little micro-zoom movements. A good example is in the movie "Hancock". This effect really brings the footage to life.
If you really wanted to go all out with this I think this would work (but you have to use a 3D software for it, like 3ds max)..
you can film a plane in the 3D software and animate the camera to give it the wiggles, shakiness that you want, then you export the animation of the plane from the view point of the camera (using a format that supports exporting the uv coordinates, like openexr) then you can use a plugin for after effects su as re:map uv (think thats what its called) or the youveelizer (http://maltaannon.com/articles/after-effects/youveelizer/) and then put the video footage onto that plane and play the animation.
Just figured I'd throw this out there since it might interest someone, I'm always thinking of weird ways to utilize 3D apps, I haven't tested it myself but I think this would work and could give unique shakiness if done right but it would take some time to do.